One week after conducting an unbearable telephone interview with accused Penn State child rapist Jerry Sandusky on NBC's Rock Center, Bob Costas returned to the program tonight to talk about what's coming next. "There has to be more," said Costas, speculating on both the breadth of the accusations against Sandusky, as well as how much former Penn State football coach Joe Paterno knew about them without ever taking action. "There will be more."